如何放大和转换动画？

Question

很明显如何进行放大/缩放animation以及如何将图像动画改为another。但我需要一个图像放大和中途转换到另一个。如何做呢？

Answer 1

试试这个代码：

[UIView animateWithDuration:2.0 animations:^{ 
     self.imgView.transform = CGAffineTransformMakeScale(1.5, 1.5); 
    } 
        completion:^(BOOL finished){ 

         _imgView.image = [UIImage imageNamed:@"3D_search"]; 
         [UIView animateWithDuration:2.0 animations:^{ 

          self.imgView.transform = CGAffineTransformMakeScale(2.0, 2.0); 
         }]; 
        }]; 

Answer 2

该代码会为你工作。

[UIView animateWithDuration:2.0 animations:^{ 
    imgView.transform = CGAffineTransformMakeScale(1.5, 1.5); 
} 
       completion:^(BOOL finished){ 
        [UIView transitionWithView:self.view 
             duration:2.0f 
             options:UIViewAnimationOptionTransitionCrossDissolve 
            animations:^{ 
             [imgView setImage:[UIImage imageNamed:@"default_avatar"]]; 
             imgView.transform = CGAffineTransformMakeScale(2.0, 2.0); 
            } completion:nil]; 
         }];